Add (and document) fetchMakeURL()

svn path=/head/; revision=60927

lib/libfetch/fetch.3

@@ -28,6 +28,7 @@
 .Dt FETCH 3
 .Os
 .Sh NAME
+.Nm fetchMakeURL ,
 .Nm fetchParseURL ,
 .Nm fetchFreeURL ,
 .Nm fetchGetURL ,
@@ -58,6 +59,8 @@
 .Fd #include <stdio.h>
 .Fd #include <fetch.h>
 .Ft struct url *
+.Fn fetchMakeURL "char *scheme" "char *host" "int port" "char *doc" "char *user" "char *pwd"
+.Ft struct url *
 .Fn fetchParseURL "char *URL"
 .Ft void
 .Fn fetchFreeURL "struct url *URL"
@@ -120,8 +123,10 @@ all URL schemes.
 For instance, the file scheme only needs the <scheme>
 and <document> components.
 .Pp
+.Fn fetchMakeURL
+and
 .Fn fetchParseURL
-returns a pointer to a
+return a pointer to a
 .Fa url
 structure, which is defined as follows in
 .Aq Pa fetch.h :
@@ -143,6 +148,8 @@ struct url {
 .Ed
 .Pp
 The pointer returned by
+.Fn fetchMakeURL
+or
 .Fn fetchParseURL
 should be freed using
 .Fn fetchFreeURL .

lib/libfetch/fetch.c

@@ -236,6 +236,48 @@ fetchListURL(char *URL, char *flags)
     return ue;
 }
 
+/*
+ * Make a URL
+ */
+struct url *
+fetchMakeURL(char *scheme, char *host, int port, char *doc,
+    char *user, char *pwd)
+{
+    struct url *u;
+
+    if (!scheme || (!host && !doc)) {
+	_url_seterr(URL_MALFORMED);
+	return NULL;
+    }
+	
+    if (port < 0 || port > 65535) {
+	_url_seterr(URL_BAD_PORT);
+	return NULL;
+    }
+    
+    /* allocate struct url */
+    if ((u = calloc(1, sizeof *u)) == NULL) {
+	_fetch_syserr();
+	return NULL;
+    }
+
+    if ((u->doc = strdup(doc ? doc : "/")) == NULL) {
+	_fetch_syserr();
+	free(u);
+	return NULL;
+    }
+    
+#define seturl(x) snprintf(u->x, sizeof u->x, "%s", x)
+    seturl(scheme);
+    seturl(host);
+    seturl(user);
+    seturl(pwd);
+#undef seturl
+    u->port = port;
+
+    return u;
+}
+
 /*
  * Split an URL into components. URL syntax is:
  * method:[//[user[:pwd]@]host[:port]]/[document]
@@ -250,7 +292,6 @@ fetchParseURL(char *URL)
 
     /* allocate struct url */
     if ((u = calloc(1, sizeof *u)) == NULL) {
-	errno = ENOMEM;
 	_fetch_syserr();
 	return NULL;
     }
@@ -320,7 +361,6 @@ nohost:
 	p = "/";
     
     if ((u->doc = strdup(p)) == NULL) {
-	errno = ENOMEM;
 	_fetch_syserr();
 	goto ouch;
     }

lib/libfetch/fetch.h

@@ -110,6 +110,7 @@ int		 fetchStat(struct url *, struct url_stat *, char *);
 struct url_ent	*fetchList(struct url *, char *);
 
 /* URL parsing */
+struct url	*fetchMakeURL(char *, char *, int, char *, char *, char *);
 struct url	*fetchParseURL(char *);
 void		 fetchFreeURL(struct url *);